actions delay fixed

- before, you had to wait one hour for one action to be available, even
  if you use them simultaneously, now there is one countdown per action
- new function in Utils exec_delayed, to execute function after a given
  time
- actions delays are stored in a new file named in the config file
- the main loop of Main (rpcheck subroutine) now checks for delayed
  functions to execute
- other typo/style fixs